def shen(lis):
	li=[];
	for x in lis:
		if(type(x)==type([])):
			li.append(shen(x));
		else:
			li.append(x);
	return li;

zhang=['张三',['age',20]];
li=shen(zhang);
li[0]='李四';
li[1][1]=28;
print('zhang:',zhang);
print('li:',li);
print('li is zhang:',li is zhang);
print('li[1] is zhang[1]:',li[1] is zhang[1]);
print('li[1][1] is zhang[1][1]:',li[1][1] is zhang[1][1]);
print('li is zhang:',li is zhang);
